Return to sched.h CVS log

Up to [local] / prex-old / sys / include

Annotation of prex-old/sys/include/sched.h, Revision 1.1.1.1

1.1       nbrk        1: /*-
                      2:  * Copyright (c) 2005-2007, Kohsuke Ohtani
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. Neither the name of the author nor the names of any co-contributors
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29:
                     30: #ifndef _SCHED_H
                     31: #define _SCHED_H
                     32:
                     33: #include <event.h>
                     34: #include <thread.h>
                     35:
                     36: /*
                     37:  * Scheduling policies defined by IEEE Std 1003.1-2001
                     38:  */
                     39: #define SCHED_FIFO     0       /* First in-first out */
                     40: #define SCHED_RR       1       /* Round robin */
                     41: #define        SCHED_OTHER     2       /* Another scheduling policy */
                     42:
                     43: /*
                     44:  * Scheduling quantum (Ticks for context switch)
                     45:  */
                     46: #define QUANTUM                (CONFIG_TIME_SLICE * HZ / 1000)
                     47:
                     48: /*
                     49:  * DPC (Deferred Procedure Call) object
                     50:  */
                     51: struct dpc {
                     52:        struct queue    link;           /* Linkage on DPC queue */
                     53:        int             state;
                     54:        void            (*func)(void *); /* Callback routine */
                     55:        void            *arg;           /* Argument to pass */
                     56: };
                     57:
                     58: /* state for DPC */
                     59: #define DPC_FREE       0x4470463f      /* 'DpF?' */
                     60: #define DPC_PENDING    0x4470503f      /* 'DpP?' */
                     61:
                     62: #define sched_sleep(evt)       sched_tsleep((evt), 0)
                     63:
                     64: extern int      sched_tsleep(struct event *, u_long);
                     65: extern void     sched_wakeup(struct event *);
                     66: extern thread_t         sched_wakeone(struct event *);
                     67: extern void     sched_unsleep(thread_t, int);
                     68: extern void     sched_yield(void);
                     69: extern void     sched_suspend(thread_t);
                     70: extern void     sched_resume(thread_t);
                     71: extern void     sched_tick(void);
                     72: extern void     sched_start(thread_t);
                     73: extern void     sched_stop(thread_t);
                     74: extern void     sched_lock(void);
                     75: extern void     sched_unlock(void);
                     76: extern int      sched_getprio(thread_t);
                     77: extern void     sched_setprio(thread_t, int, int);
                     78: extern int      sched_getpolicy(thread_t);
                     79: extern int      sched_setpolicy(thread_t, int);
                     80: extern void     sched_dpc(struct dpc *, void (*)(void *), void *);
                     81: extern void     sched_init(void);
                     82:
                     83: #endif /* !_SCHED_H */